Genetic Archaeology
Recent News |  Archives |  Tags |  About |  Newsletter |  Submit News |  Links |  Subscribe to GeneticArchaeology.com RSS Fee Subscribe


More Articles
'Nanocamera' takes pictures at distances smaller than light's own wavelength'Nanocamera' takes pictures at distances smaller than light's own wavelength

The economic territory of Upper Palaeolithic groups is specified by flintThe economic territory of Upper Palaeolithic groups is specified by flint

Flower development in 3D: Timing is the keyFlower development in 3D: Timing is the key

Wisconsin scientists find genetic recipe to turn stem cells to bloodWisconsin scientists find genetic recipe to turn stem cells to blood

PIWI proteins and piRNAs regulate genes in the germline and beyondPIWI proteins and piRNAs regulate genes in the germline and beyond

Potent spider toxin 'electrocutes' German, not American, cockroachesPotent spider toxin 'electrocutes' German, not American, cockroaches

Speedy computation enables scientists to reconstruct an animal's development cell by cellSpeedy computation enables scientists to reconstruct an animal's development cell by cell

Large twin study suggests that language delay due more to nature than nurtureLarge twin study suggests that language delay due more to nature than nurture

NRL reveals new meteorological insight into mid-level cloudsNRL reveals new meteorological insight into mid-level clouds

Law of physics governs airplane evolutionLaw of physics governs airplane evolution

Running for life: How speed restricts evolutionary change of the vertebral columnRunning for life: How speed restricts evolutionary change of the vertebral column

Brain waves show learning to read does not end in 4th grade, contrary to popular theory

Asteroid Vesta to reshape theories of planet formationAsteroid Vesta to reshape theories of planet formation

Is the universe a bubble? Let's checkIs the universe a bubble? Let's check

Postcards from the photosynthetic edgePostcards from the photosynthetic edge

Getting a grip on robotic graspGetting a grip on robotic grasp

The bend in the Appalachian mountain chain is finally explainedThe bend in the Appalachian mountain chain is finally explained

Sophisticated radiation detector designed for broad public useSophisticated radiation detector designed for broad public use

Cooperation among humans, a question of ageCooperation among humans, a question of age

Protein's 'hands' enable bacteria to establish infection, research findsProtein's 'hands' enable bacteria to establish infection, research finds

Less exercise, not more calories, responsible for expanding waistlinesLess exercise, not more calories, responsible for expanding waistlines

High earners in a stock market game have brain patterns that can predict market bubblesHigh earners in a stock market game have brain patterns that can predict market bubbles

A healthy lifestyle adds years to lifeA healthy lifestyle adds years to life

Platonic solids generate their 4-dimensional analoguesPlatonic solids generate their 4-dimensional analogues

Study of animal urination could lead to better-engineered productsStudy of animal urination could lead to better-engineered products

Do probiotics help kids with stomach bugs?Do probiotics help kids with stomach bugs?

Strict diet suspends development, doubles lifespan of wormsStrict diet suspends development, doubles lifespan of worms

Identified for the first time what kind of explosive has been used after the detonationIdentified for the first time what kind of explosive has been used after the detonation

Copied from nature: Detecting software errors via genetic algorithmsCopied from nature: Detecting software errors via genetic algorithms

Ancestors of African Pygmies and neighboring farmers separated around 60,000 years ago (4/11/2009)

Tags:
humans, pygmies, population genetics
Several different tribes of pygmies appear to have evolved from a common ancestor
Several different tribes of pygmies appear to have evolved from a common ancestor

All African Pygmies, inhabiting a large territory extending west-to-east along Central Africa, descend from a unique population who lived around 20,000 years ago, according to an international study led by researchers at the Institut Pasteur in Paris. The research, published April 10 in the open-access journal PLoS Genetics, concludes that the ancestors of present-day African Pygmies and farmers separated ~60,000 years ago.

Pygmies are characterized by a forest-dwelling hunter-gathering lifestyle and distinctive cultural practices and physical traits (e.g., low stature). Two groups of Pygmy populations live in the African rainforests: the "Western Pygmies" and the "Eastern Pygmies". The common origins of the two groups of Pygmies, separated by thousands of kilometers, have been long debated, and their relationships with neighboring farmers remained obscure.

The researchers, led by Lluis Quintana-Murci, studied the genetic profile of twelve populations of Pygmies and neighboring farmers dispersed over the African continent, using sequence data from non-coding regions of their genomes. Using simulation-based procedures, they determined that the ancestors of Pygmy hunter-gatherers and farming populations started to diverge ~60,000 years ago, coinciding with a period of important human migration both within and outside Africa. Much later, ~20,000 years ago, Western and Eastern Pygmies separated, concurrently with a period of climate change leading to large retreats of the equatorial rainforest into refugia.

The common origin of all Pygmies unmasked in this study led Etienne Patin, one of the leading authors, to conclude that "they have probably inherited their distinctive shared physical traits, such as low height, from a common ancestor, rather than by convergent adaptation to the rainforest". However, complete genome-wide profiles of these populations are now needed, both to characterize more precisely their demographic history and to identify genes involved in the adaptation of these populations with different lifestyles to their specific ecological habitats.

Note: This story has been adapted from a news release issued by the Public Library of Science

Post Comments:

Search

New Articles
Mixed genes mix up the migrations of hybrid birdsMixed genes mix up the migrations of hybrid birds

Ancient genetic material from caries bacterium obtained for the first timeAncient genetic material from caries bacterium obtained for the first time

Marmoset sequence sheds new light on primate biology and evolutionMarmoset sequence sheds new light on primate biology and evolution

Untangling spider's webs

Oetzi's 'non-human' DNA

Genome-wide analysis reveals genetic similarities among friends

A-maize-ing double life of a genome

Dodos and spotted green pigeons are descendants of an island hopping bird

Organismal biologists needed to interpret new trees of life

Biologists link sexual selection and placenta formationBiologists link sexual selection and placenta formation

Transgender algae reveal evolutionary origin of sexesTransgender algae reveal evolutionary origin of sexes

DNA of 'Evolution Canyon' fruit flies reveals drivers of evolutionary changeDNA of 'Evolution Canyon' fruit flies reveals drivers of evolutionary change

Hair from mummy's clothes provides insights into red deer lineage

Extinct human cousin gave Tibetans advantage at high elevationExtinct human cousin gave Tibetans advantage at high elevation

Genetic study reveals vulnerability of northwest dolphins



Archives
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007
July 2007
June 2007
May 2007
April 2007
March 2007
February 2007
January 2007
November 2006
October 2006
September 2006
June 2005
October 2004
July 2001


Science Friends
Agricultural Science
Astronomy News
Biology News
Biomimicry Science
Cognitive Research
Chemistry News
Tissue Engineering
Cancer Research
Cybernetics Research
Electonics Research
Forensics Report
Fossil News
Genetics News
Geology News
Microbiology Research
Nanotech News
Parenting News
Physics News


  Archives |  Submit News |  Advertise With Us |  Contact Us |  Links
Use of this site constitutes acceptance of our Terms of Service and Privacy Policy. All contents © 2000 - 2015 Web Doodle, LLC. All rights reserved.